Since the development of voltage opamp,it has become the main analog building block in developing various analog signal processing circuits. However, the recent advances in IC technology have paid importance to the usefulness of current mode analog building blocks,such as current conveyors, as they possess many unique and attractive characteristics over their voltage mode counterparts. This book discusses the development of current conveyors, its translinear implementation, conversion of opamp to current conveyor based circuits. Filter is very important signal processing circuit, specially for communication, instrumentation etc. In this book a number of filter configurations have been developed with fewer active and passive components and/or improved filter performance parameters. The performance of the filters has been analyzed in terms of various parameters such as responses, bandwidth,sensitivities, power consumption ,distortion etc. The effect of nonidealities and its minimization technique have also been discussed. The material presented in this book will be useful for undergraduate and postgraduate students, researcher and circuit designer in the field of IC analog filter.